Kenji Kasen (Japanese:加瀬健治) was a character in the Grand Theft Auto series who appears as a main character in Grand Theft Auto III (set in 2001). He is the brother of Asuka and Kazuki Kasen, and the co-leader of the Yakuza alongside his sister Asuka. He is also the brother-in-law of Toshiko Kasen possible relative of Kanbu and is possibly the father of Yuka, Asuka's niece.